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Classifying Fishes: Order Cyprinodontiformes
Classifying Fishes: Order Cyprinodontiformes
The classification of animals is called taxonomy, all types of animals, including fish, are categorised into different types. Fish are generally grouped according to their likenesses and differences by the people that do the classifying called taxonomists, or systematists.
Five "orders" make up 95% of the fishes in the freshwater aquarium hobby. They are the Cypriniformes, the Characiformes, the Siluriformes, the Cyprinodontiformes and the Perciformes. The remaining 5% are spread over another 4-5 orders.
The Order Cyprinodontiformes
The order Cyprinodontiformes contains the livebearers - fish that give birth to live fry rather than lay eggs, killifishes and a handful of other families. Cyprinodontiformes is an order of ray-finned fish, comprising mostly small, freshwater fish. Lower classifications include pupfish, Mosquitofish, Rivulidae and Poecilia.
See examples below:
Guppies
All of the popular Guppy species are livebearing fish belonging to the order Cyprinodontiformes.
Platies
All of the popular Platy species are livebearing fish belonging to the order Cyprinodontiformes.
Mollies
All of the popular Molly species are livebearing fish belonging to the order Cyprinodontiformes, sub family Poecilia.
Swordtails
All of the popular Swordtail species are livebearing fish belonging to the order Cyprinodontiformes.
Killifish
All of the popular Killifish species are livebearing fish belonging to the order Cyprinodontiformes.
Groups and Taxon / Taxa
Like all animals, fish are classified into large primary groups that are broken down into smaller groups, which are then broken down into even smaller, less inclusive groups.
For fish, the largest and most inclusive group would be the kingdom Animalia, which contains all animals.The next being the phylum, for fish it would be the phylum Vertebra, which contains all animals with backbones.
The next smaller grouping would be the "class" Osteichthyes, before descending into the four main "taxa" that make up the classifications of fish. These are the order, the family, the genus and the species. Some subfamilies, subgenera and subspecies also exist. In future blogs, we will explore in depth the history and the meaning behind them.
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